textproduct: Rapid City

KEY MESSAGES

-Another cold night tonight

-Breezy and warmer on Monday

-Mainly dry and seasonally mild conditions expected much of this week, especially western areas

DISCUSSION

(This Evening Through Sunday) Issued at 1206 PM MST Sun Jan 25 2026

Western NOAM ridge will shift back east this week, supporting milder weather for the region. Arctic high will traverse the region tonight, supporting another cold night most areas. The coldest conds will be across southern SD as subzero temps will overlap with increasing southerly flow as the LLJ develops. Have went ahead and issued a cold wx adv for this area. Elsewhere, temps will start to rise in the western third as WAA ensues ahead of the next clipper system. This system will support much warmer weather for most of the FA Mon as Pac air spreads back into the region. However, breezy NW winds will develop behind the initial front with gusts up to 45-50 mph for a brief period across NW SD. Expect highs in the 30s with a few mid 40s possible downwind the BH where compressional warming will be in place. Cool front will settle back south Monday night, but not nearly as cold with the arctic air remaining NE of the FA. The sfc front will stall near or over the region through the end of the week as weak impulses traverse the boundary, supporting some low chances for snow across mainly the NW half. Much warmer next weekend with highs in the 50s likely as the ridge shifts east.

AVIATION

(For the 00Z TAFS Through 00Z Monday Evening) Issued At 430 PM MST Sun Jan 25 2026

Very light flurries will be possible in areas, especially across southern SD through early this evening. VFR conditions expected overnight as drier air moves in. Gusty west winds to 30 knots will develop across northwest SD by late Monday morning.

UNR WATCHES/WARNINGS/ADVISORIES

SD...Cold Weather Advisory from 11 PM MST /midnight CST/ this evening to 7 AM MST /8 AM CST/ Monday for SDZ041-042-044-046-047- 049-075>077. WY...None.